The first astronomer to publicize his subject on radio and television, Sir Fred Hoyle rose to national prominence in the 1950s as a result of his controversial ideas on the origins of the universe. Famous for his work on the thermonuclear reactions inside stars that made possible the beginnings of life, he developed the 'steady state' theory of the universe, soon challenged by the rival 'big bang' theory, which led to a bitter dispute between Hoyle and his rivals - not only fellow scientists but also archaeologists and palaeontologists whose conclusions he had challenged. This is a major scientific biography of one of the greatest, and best-known, scientists of the twentieth century, written in an enjoyable and accessible style.